Core-drilling apparatus.



PATENTED JAN. 28, 1908.

GORE DRILLING APPARATUS.

APPLICATION FILED MAY 29, 1907.

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C. ATBRRY. GORE DRILLING APPARATUS.

APPLICATION FILED MAY 29. 1907.

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COLEMAN A. TERRY, OF NEW YORK, N. Y. l

CORE-DRILLING- APPARATUS.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed May 29| 1907. Serial No. 376.299.

To all whom it may concern:

Be it known that I, COLEMAN A. TERRY, a citizen of the United States ofAmerica, and a resident of the city of New York, county and State of NewYork, have invented certain new and useful Improvements in Core-Drilling Apparatus, of which the following is a specification, referencebeing had to the accompanying drawings, forming a part thereof.

My invention relates to improvements in core drilling apparatus, and themain objects of my invention are to produce a simple drill, compact inform and light in weight so that it may be easily shipped from'place toplace; to provide for the ready adjustment of the drill so that it maybe pointed in any direction, and to im rove and simplify clutchmechanism there or such as is employed for connecting and disconnectingthe rotating mechanism with the source of power.

To these ends my invention consists in certain novel details ofconstruction and combination of parts as will hereinafter vbe more fullyset forth.

I will now proceed to describe an apparatus embodying my invention,having reference to the accom anying drawings illustrating same, and withen point out the novel features in claims.

In the drawings: Figure 1 is a view in `front elevation of the drill,certain parts being broken away in section. Fig. 2 1s an end view of thesame. Fig. 3 is a top view of the same. Fig. 4 is a detail view incentral longitudinal section through the drive shaft.

The frame work of the machine comprises two side frames 5, 5, said sideframes including clamp members 6, 6, which are arranged to be supportedupon, and secured to, cylindrical supports such as may suitably becomposed of pipe sections. Asherein illustrated, thesupporting structurecomprises two vertical members 7, 7, and two horizontal members 8, 8,rigidly secured together. The members 7 and 8 are preferably of iping tosecure strength and lightness, w e the clamps 6 are adapted to bemounted upon either vertical or the horizontal members as may bedesired.

In the drawings the machine is shown as supported by the horizontalmembers 8, the sai clamps being provided with bolts 9 by which themachine may be secured in osition against accidental movement. ournaledin suitable bearings in the side frames 5 is a swinging yoke frame 10,said yoke frame having trunnions l1 which form the said pivotal supporttherefor, and vertically disposed hubs 12 which form bearings for thevertical drill spindle 13. A miter gear-wheel 14 is splined upon thesaid drill spindle 13, the said gear-wheel 14 being arranged. in meshwith a corresponding miter gear-wheel 15, the latter mounted upon ashort horizonvtal shaft 16 which is journaled in the swing- Nuts 21,mounted vupon the studs 19,

clamp the bosses 18 to the side frames so as to secure the swinging yokeframe against movement upon its axis with respect to the side frames 5after it had been adjusted, but which permit adjustment of the saidswinging frame through an angle of ninety degrees when desired. Thisadjustment of the swinging yoke frame 10 will present the drill rods fordrilling downwardly or any angle therefrom up to a horizontal positionforwardly with respect to the supporting elements 7 By clamping the sideframes to the vertical elements 7- instead of to the horizontal members8, further adjustment may be had between the horizontal and a verticalposition in the upward direction. Adjustment for the next ninety degreesaround the circle may be obtained by again clamping the side frames 6upon the horiyzontal member 8 but in an inverted position,

while an adjustment through the final ninety degrees of the circle maybe obtained by once more returning the-side frames to the verti` calmembers 7, but in a position inverted from which they were formerlyplaced.

The yoke frame 10 is provided at the rear with bearing hubs 22, 23, oneupon each side thereof, said hubs arranged in line with each other andconstructed to form a bearing support for a drive shaft 24. The hub 22has secured thereto a sleeve or bushing 25, the interior of which formsthe actual bearing for the said shaft 24, at that end thereof, the

said sleeve or bushing having a portion 26 extending beyond the said hub22, said portion being exteriorly screw-threaded, as shown moreparticularly and in detail in Fig. 4 of the drawings. A sleeve 27 isrotatably mounted in the other said hub 23, and the said sleeve 27carries at one end thereof a spur-gear 28 which is arranged in mesh withthe aforesaid pinion 17, While at the other end thereof it carries the female member 29 of a friction clutch 30. The member 29 and gear-wheel 28are rigidly secured to the sleeve 27 so as to.partake of the movementsthereof at all times, but the said sleeve 27, and hence the said clutchmember and gearwheel, are loosely mounted with respect to the shaft 24.The male member 31 of the clutch 30 is mounted upon the said shaft 24,being connected thereto by a spline 32, whereby a limited longitudinalmovement thereof is permitted upon the said shaft 24, but the saidmember and shaft are compelled at all times to rotate together. An oerating member 33, including a hand wiheel, is mounted upon the portion26 of the stationary sleeve or bushing 25, an antifriction bearing 34being arranged between the hub of the said member 33 and the hub of theclutch member 31. member 33 in one direction, the said member 31 will beforced toward the member 29 to cause the said clutch members to soengage each other as to force the shaft 24 to positively transmit rotarymovements to the gear-wheel 28. On the other hand, when the member 33 isadjusted in the other direction, pressure from the member 31 will bereleased and the said shaft 24 may at such times rotate freely withouttransmitting any movement to the said wheel 28 and hence to the drill.When the clutch members are engaged the sleeve 27 and shaft 24 rotatetogether, a bearing being formed between the sleeve 27 and the hub 23.When the clut-ch members are disengaged the sleeve 27 remains at rest inthe hub 23, and the shaft then finds a bearing in the said sleeve 27, aswill be well understood.

In order to enforce the disengagement of the clutch member 31 from themember 29, I have provided a collar 35 which engages the hubs of theoperating member 33 and the clutch member 31 respectively, said collarbeing arranged to bridge over the anti-fric'- tion thrust bearing 32.

The foregoing clutch mechanism will be found eculiarly adapted to thepresent uses. The c utch and operating mechanism is itself exceedinglycompact, giving room for long bearings in the hubs 22, 23. The novelarrangement of bearings between theshaft 24 the sleeve 27 and the hub 23will be found to reduce wear considerably, while by reason of the factthat the entire said mechanism is arranged on a single shaft, whichshaft isV By rotating the carried by the swinging frame 10 and connectedthrough gears 28, 17 with the shaft 16 mounted axially with the saidswinging frame, a proper drive relation is maintained in any position towhich the parts may be adjusted. The said shaft 24 carries a drivepulley 36 by which power may be transmitted thereto, or the said shaft24 may be turned by hand, if desired.

The relationship of the gearing, and hence the relationship of the speedbetween the shafts 24, 16, may be varied at will by changing the gears28 17 and substituting therefor gears of any desired diameter, thecombined diameters of the wheels remaining, of course, at all timesunchanged. The relative positions of the pinion 17 and spur-gear 28 maybe reversed, if desired, so as to gear the drill down instead of u Y Ihave providecffeed drums 37 upon which may be mounted ropes for theusual or any desired form of rope feed for the drill, said drums securedto a shaft 38, mounted to rotate in a hub 39 carried' by the uppervertical sleeve bearing hub 12. A lever 40, with ratchet and pawlmechanism 41 constitutes a convenient means for rotating the said drums,as will be well understood by reference to the drawings.

What I claim is:

1. In core drilling apparatus the combination with two parallel sideframes having clamps by which they may be secured to a support, of aswinging yoke frame having trunnions pivoted in said side frames andclamp bolts arranged at a distance from the axis of said trunnions, saidside frames havin concentric slots for receiving said clamp bo ts, adrill rod mounted in and carried by said yoke frame, said drill rodarranged in the plane of, but at right angles to the axis of said yokeframe, a shaft mounted in one of the trunnions of said yoke frameconcentric with the axis thereof, and gearing between said shaft andsaid drill rod.

2. In core drilling apparatus the combination with a support havingvertical and horizontal members, of a framework comprising arallel sideframes having clamps by which they may be secured either way up to.either of said members, a swinging yoke frame having trunnions pivotedin said 'side frames whereby said yoke frame may swing through an arc ofninety degrees with respect to said side frames, means for clamping saidkyoke frame in its adjusted position with respect to said side frames, adrill rod mounted in and carried by said yoke frame, said drill arrangedin the plane of, but at right angles to the axis of said yoke frame,ashaft mounted in one of the trunnions of said yoke frame concentricwith the axis thereof, and gearing between said shaft and said drillrod.

3. In core drilling apparatus the combinationwith side frames, aswinging yoke frame pivoted thereto, and a drill operating shaft mountedin said yoke frame, concentric with the pivotal axis thereof, the saidframe provided with rearwardly arranged bearings parallel with saidshaft, of a drive shaft located in said bearings, a sleeve rotatablymounted in one of said bearings, and freely surrounding the said driveshaft, a gear wheel carried by said sleeve on one side of said bearing,a clutch member carried by said sleeve at the other side of saidbearing, a complementary clutch rotatably mounted upon said shaft,controlling means for operatively connecting and disconnecting the saidclutch members, and a gear upon said drill opelrating shaft in mesh withthe gear aforesain.

4. In core drilling apparatus the combination with side frames, aswinging yoke frame pivoted thereto, and a drill operating shaft mountedin said yoke frame, concentric with the pivotal axis thereof, the saidframe provided with rearwardly arranged bearings parallel with saidshaft, of a drive shaft located in said bearings a sleeve, rotatablymounted in one of said bearings, and freely surrounding the said driveshaft, a gear Wheel carried by said sleeve on one side of said bearing,a clutch member carried by said sleeve at the other side of saidbearing, a complementary clutch rotatably mounted upon said shaft, astationary externally threaded sleeve projecting from the other saidbearing, an operating member mounted thereon, the said complementaryclutch member located between said operating member and the first saidclutch member, means for transmitting the longitudinal movements of saidoperating member to said first named clutch member, and a gear upon saiddrill operating shaft in mesh with the gear aforesaid.

COLEMAN A. TERRY.

Witnesses:

D. HOWARD HAYWARD, LYMAN S, ANDREWS, Jr.

